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Tag: "resistant" at biology news

Enzyme delivered in smaller package protects cells from radiation damage

...he MnSOD transfected cells were significantly more resistant to ionizing radiation than the non-tranfected cells. However, there was no significant difference in survival between MnSOD-minicircle and MnSOD full plasmid transfected cells. According to Dr. Greenberger, whose group is currently conducting a phase...

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

...y the most lethal form of human malaria has become resistant to drug treatment in the past three decades. They ... Plasmodium falciparum (P. falciparum), has become resistant to most of the drugs that could once destroy it. They have already described and expressed two other...

Could fungal collection hold the key to new life-saving drugs?

...harmaceutical drugs to fight cancers, diseases and resistant strains of infections such as MRSA.” SIDR brings together scientists from different disciplines to focus on drug discovery. They have developed test systems to detect biological activity in samples of natural products that could lead to new medici...

454 sequencing identifies HIV drug resistance at early stage

...stem to identify previously undetectable rare drug resistant HIV variants in samples from an earlier performed ...re used in the clinic. The additional low abundant resistant variants detected by Ultra Deep sequencing were found to be extremely important as it enabled the pr...

Ancient retrovirus sheds light on modern pandemic

...s are not susceptible to it and have probably been resistant throughout millennia," said senior author Michael Emerman, Ph.D., a member of the Human Biology and Basic Sciences divisions at the Hutchinson Center. "However, we found that during primate evolution, this innate immunity to one virus may have made u...

Resistant HIV quickly hides in infants' cells

...urprisingly high figure. Of those five, four were resistant to non-nucleoside reverse transcriptase inhibitors... virus quickly developed resistance, but levels of resistant virus declined over time to undetectable levels. In the current study, however, researchers found th...

Peramivir protects mice from lethal H5N1 infection

...y studying the emergence of H5N1 variants that are resistant to this drug and may occur in the course of treatment," said Natalia A. Ilyushina, Ph.D., a postdoctoral fellow in Webster’s laboratory. Ilyushina is a co-author of the paper. ...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

...May. “We found that island populations are less resistant to biological invasions, which will likely increase dramatically with changing climate,?says Walter Jetz, an assistant professor of biological sciences at UCSD and a co-author of the study. “Climate change will drive animals to move to new places,...

WHO data confirms low level of resistance to Tamiflu

...the patient recovered from her illness. Again this resistant virus was shown to cause less severe infection and was less capable of transmission. In the other two cases, the recommended dose and duration of oseltamivir was followed.4 However, while one patient received treatment on the second day of illness, t...

Researchers attach genes to minichromosomes in maize

...ies for the development of crops that are multiply resistant to viruses, insects, fungi, bacteria and herbicide...omosomes in other plant varieties and produce more resistant plant strains, develop more medically useful proteins and metabolites, and study how chromosomes fun...

Asexual worm quickly adapts to soil contamination

... of this the nematodes in the polluted soil became resistant to the contamination. In the contaminated culturing medium they laid more eggs and lived for longer than the nematodes from the clean soil. Asexual The rapid adaptation to the environment in an asexual species is an interesting finding. It co...

Researchers develop way to calculate speed of bacterial sex

... also create potentially harmful bacteria that are resistant to antibiotics and increase gene flow from genetically modified organisms to native soils. By developing a real-life model of bacterial gene transfer, UC-Davis researchers hoped to gain insight into the rates of bacterial adaptation in the environmen...

Genome of yellow fever/dengue fever mosquito sequenced

... gene into the genome that would make the mosquito resistant to the virus and stop its role as a vector for disease. Although that scenario is challenging, the payoff is potentially great, Tu said. "By introducing TEs in a more or less random way to see what happens to the laboratory mosquitoes, the TEs be...

Scientists identify pancreatic cancer stem cells

...d to take on the qualities of stem cells. They are resistant to traditional therapy designed for cells that rapidly turn over because stem cells don't, according to some researchers. Thus, they remain after tumors shrink and may be responsible for cancer recurrence and metastasis. This study confirms at lea...

Study suggests some drug resistance to influenza B medications

...e. Contrary to what had been hoped until now, some resistant variants are vigorous pathogens. Whether these vir...ithin families or acquired from the community, the resistant variants may be here to stay. In light of the recent observation that oseltamivir may be less effect...

Study finds antibiotic resistance in poultry even when antibiotics were not used

...little ?if anything ?to reduce rates of antibiotic resistant bacteria that have the potential to threaten human...y conditions have high levels of bacteria that are resistant to common antibiotics. Her findings, published in the March issue of the journal Applied and Environ...

Scientists find genes involved in the battle between Hessian flies and wheat

... can't establish a feeding site on plants that are resistant to the larvae. "The focus of our work is to try... The toxic oxygen compound defense mechanism in resistant plants stresses the larvae, which then fight back, he said. This is confirmed by the Hessian fly lar...

NT researchers discover breakthrough in malaria treatment

...f disease. Vivax malaria is becoming increasingly resistant to standard treatments, but few studies have deter... the first to highlight the best treatment of drug resistant strains of vivax malaria found in the Asia pacific region." said Dr Price. "It also provides evid...

Stress may help cancer cells resist treatment, research shows

...rostate and breast cancer cells that may make them resistant to cell death. "These data imply that emotional stress may contribute to the development of cancer and may also reduce the effectiveness of cancer treatments," said George Kulik, D.V.M., Ph.D., an assistant professor of cancer biology and senior res...

Bacterial walls come tumbling down

... as methicillin-resistant Staphylococcus aureus is resistant to several common antibiotics, including penicillin and amoxicillin, and is a great cause for concern among hospital infectious disease staff. Postdoctoral fellow Andrew Lovering, who is first author on the paper, hopes the group's three-dimensional ...

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